"Analysis has shown that climate response to the long-term global solar forcing has a regional character. An appreciable delay in the climate response to the solar signal can occur (up to 150 years). In addition, the sign of the climate response can differ from the solar signal sign. The climate response to long-term solar activity variations (from 10s to 1000s years) manifests itself in different climatic parameters, such as temperature, precipitation and atmospheric and oceanic circulation. The climate response to the de Vries cycle has been found to occur not only during the last millennia but also in earlier epochs, up to hundreds of millions years ago."

Long-term climatic changes related to solar forcing were examined using millennium-scale palaeoclimatic reconstructions from the Central Asian mountain region, i.e. summer temperature records for the Tien Shan mountains and precipitation records for the Tibetan Plateau. The reconstructions were based on juniper tree-ring width records, i.e. Juniperus turkestanica for the Tien Shan and Sabina przewalskii for the Tibetan Plateau. The data were processed using spectral and wavelet analysis and filtered in the frequency range related to major solar activity periodicities. The results obtained for various tree-ring chronologies indicate palaeoclimatic oscillations in the range of the de Vries (∼ 210-year) solar cycles through the last millennium.

The quasi-200-year variations revealed in the palaeoclimatic reconstructions correlate well (R2 = 0.58–0.94) with solar activity variations (Δ14C variations). The quasi-200-year climatic variations have also been detected in climate-linked processes in Asia, Europe, North and South America, Australia, and the Arctic and Antarctica. The results obtained point to a pronounced influence of solar activity on global climatic processes.

Analysis has shown that climate response to the long-term global solar forcing has a regional character. An appreciable delay in the climate response to the solar signal can occur (up to 150 years). In addition, the sign of the climate response can differ from the solar signal sign. The climate response to long-term solar activity variations (from 10s to 1000s years) manifests itself in different climatic parameters, such as temperature, precipitation and atmospheric and oceanic circulation. The climate response to the de Vries cycle has been found to occur not only during the last millennia but also in earlier epochs, up to hundreds of millions years ago.

2 comments:

Near as I can tell, this is based on the un-archived Esper Tien Shan data ... which, since it is not available in anything but gray versions, is meaningless.

Of course, I could be wrong. If so, please let me know where I can access the Tien Shan data as used by this "scientific" paper. I ask, because without that data this is not science, it's just an advertisement for science, and The Hockey Schtick is remiss for publishing it as though it were science.

Willis, why are you asking me for the data from a peer-reviewed published paper for which I am not an author? I don't have the data, so would kindly ask the authors for the data instead of me? That's usually the way things work :-)

While I absolutely agree with you that the lack of transparency and access to raw data in climate science (and unfortunately many other areas of science) is abominable and anti-scientific, and that replication is the hallmark of science, I'm quite surprised that you consider the HS "remiss" for posting abstracts and graphs from a peer-reviewed paper from one of the "top" paleoclimate journals "as though it were science." Please don't shoot the messenger or jump to conclusions and contact the authors for their data.